WO2013175104A2 - Hybrid windshield for vehicle comprising a polycarbonate shell provided with a laminated glass insert - Google Patents

Hybrid windshield for vehicle comprising a polycarbonate shell provided with a laminated glass insert Download PDF

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Publication number
WO2013175104A2
WO2013175104A2 PCT/FR2013/051081 FR2013051081W WO2013175104A2 WO 2013175104 A2 WO2013175104 A2 WO 2013175104A2 FR 2013051081 W FR2013051081 W FR 2013051081W WO 2013175104 A2 WO2013175104 A2 WO 2013175104A2
Authority
WO
WIPO (PCT)
Prior art keywords
insert
glazing element
infrastructure
piece
transparent wall
Prior art date
Application number
PCT/FR2013/051081
Other languages
French (fr)
Other versions
WO2013175104A3 (en
Inventor
Yong Wook SIN
Original Assignee
Peugeot Citroen Automobiles Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Peugeot Citroen Automobiles Sa filed Critical Peugeot Citroen Automobiles Sa
Priority to EP13729977.2A priority Critical patent/EP2852501B1/en
Priority to CN201380026955.8A priority patent/CN104540696B/en
Publication of WO2013175104A2 publication Critical patent/WO2013175104A2/en
Publication of WO2013175104A3 publication Critical patent/WO2013175104A3/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60JWINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00Windows; Windscreens; Accessories therefor
    • B60J1/02Windows; Windscreens; Accessories therefor arranged at the vehicle front, e.g. structure of the glazing, mounting of the glazing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D25/00Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/04Door pillars ; windshield pillars
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D29/00Superstructures, understructures, or sub-units thereof, characterised by the material thereof
    • B62D29/04Superstructures, understructures, or sub-units thereof, characterised by the material thereof predominantly of synthetic material
    • B62D29/043Superstructures

Definitions

  • the present invention relates to the general field of glazing of vehicles, including motor vehicles, such as windshields, rear windows, or windows.
  • panoramic windshields which comprise several separate glazed elements, assembled in different bays delimited by frames, so as to form respectively a frontal pan. laminated glass windshield type, fenestron side flaps, and a panoramic roof top flap.
  • glazings can have a particularly high weight, because of the use of laminated glass panels, this material is indeed preferred to meet the standards for safety in case of impact.
  • the objects assigned to the invention therefore seek to overcome the aforementioned drawbacks and to propose a new vehicle glazing element which is particularly light and easy to implement, while providing a wide field of view and having a high strength.
  • Another object assigned to the invention is to propose a new method of manufacturing vehicle glazing elements which is particularly simple, fast and economical to implement, and which presents good ability to adapt to a wide variety of shapes and sizes of glazing elements.
  • a vehicle glazing element characterized in that it comprises a piece of infrastructure which is made of a transparent polymer material, which is arranged so as to form a transparent wall, and at least one laminated glass insert which is fixed on said piece of infrastructure so as to be superimposed on the thickness of the transparent wall on a part of the surface of said transparent wall, so that the glazing element has at least a first reinforced window corresponding to the portion of transparent wall covered by the insert and at least one second lightened window corresponding to the transparent wall portion without laminated glass
  • a method of manufacturing a vehicle glazing element comprising a step (a) of producing an infrastructure piece during which form, for example by injection molding, a transparent polymeric material, preferably polycarbonate, to create a transparent wall of predetermined shape, then a step (b) of differentiation by lamination during which is fixed on said piece of infrastructure , preferably by means of a layer of thermoplastic polyurethane, a laminated glass insert covering an area of said piece of infrastructure strictly smaller than the total area of said piece of infrastructure, so as to create, within the glazing element, at least a first reinforced window corresponding to the portion of transparent wall covered by the insert and at least one second lightened window e corresponding to the portion of transparent wall devoid of laminated glass.
  • the invention makes it possible to produce a glazing element integrally, or almost completely, from transparent materials, which guarantees a perfect visibility through said glazing element, at every point of the latter and whatever the angle according to which the gaze is worn, from the inside of the passenger compartment of the vehicle to the outside.
  • the invention provides a structure hybrid, or "hybrid”, combining strengthened window (s) and lightened window (s), which overall lighten the glazing element while maintaining the overall optical and mechanical high qualities of it.
  • the reinforced windows may advantageously correspond to the approval areas, the most exposed and / or most critical in terms of visibility quality or impact resistance, such as, for example the front panel of the windshield.
  • thermoplastic easier to work than the mineral glass
  • thermoforming the piece of infrastructure, under conditions relatively mild, and whatever the variety or complexity of the forms of said piece of infrastructure.
  • the glazing element thus obtained advantageously forms a complete assembly subassembly, manipulable and insertable in one piece.
  • Figure 1 illustrates, in a perspective view from above, an embodiment of glazing element according to the invention.
  • Figure 2 illustrates, in an exploded perspective view, a possibility of producing glazing element according to the invention.
  • FIG. 3 illustrates, in a sectional view transverse to the edge of the glazing element, the detail of an alternative junction of the laminated glass insert on a polymer infrastructure, according to the invention.
  • FIG. 4 illustrates, in a sectional view transverse to the edge of the glazing element, the detail of another variant of junction of the laminated glass insert on a polymer infrastructure, according to the invention.
  • FIG. 5 illustrates, in a sectional view transverse to the edge of the glazing element, the detail of a third variant of junction of the laminated glass insert on a polymer infrastructure, according to the invention, said variant implementing a rubber seal-insert.
  • the present invention relates to a glazing element 1 for a vehicle (not shown).
  • Said glazing element is advantageously intended to form a transparent partition, possibly with several sides, separating the interior of the passenger from the environment of the vehicle, and may preferably form a windshield, as illustrated in Figure 1, or a rear window.
  • said glazing element 1 for a vehicle comprises on the one hand an infrastructure piece 2 which is made of a transparent polymer material, which is arranged so as to form a transparent wall 3, and on the other hand to at least one insert 4 of laminated glass which is fixed on said piece of infrastructure 2 so as to be superimposed on the thickness E3 of the transparent wall 3 on a part of the surface of said transparent wall 3, so that the glazing element 1 has at least a first reinforced window 5 corresponding to the transparent wall portion covered by the insert 4, as schematized, for example in phantom in FIG. 1 or FIG. 4, and at least one second lightened window 6 corresponding to the transparent wall portion 3 devoid of laminated glass, as schematized for example in dashed lines in FIG. 4.
  • the arrangement according to the invention makes it possible to produce within a single coherent, manipulable and insertable subassembly in one piece on a vehicle bay, several adjacent windows 5, 5, where appropriate of large dimensions. , and perfectly transparent, which optimizes the visual field provided by the glazing element 1.
  • the invention makes possible a differentiation of the glazed areas, in particular according to their exposure to external aggressions, insofar as it is possible to select the spatial arrangement and the extent of the reinforced windows 5, which will correspond to preference to areas critical for safety or visibility, such as the front panel of the windshield, and more particularly the wiping area swept by the wipers, and on the other hand lightened windows 6, which will preferably correspond to the areas judged less critical for the safety of the occupants of the vehicle, such as folded panels, type side windows and / or panoramic panoramic roof, which can be made exclusively of polymer material.
  • the glazing element 1 by reinforcing mainly or even exclusively the critical areas of the glazing element 1, it is possible to significantly limit the quantity and the proportion of laminated glass used, and thus to reduce overall the glazing element 1, for example by reducing its weight by at least 30% to 40% at least in comparison with that of an equivalent element which would be made integrally of laminated glass, without sacrificing the optical and mechanical functional qualities of said glazing element 1.
  • the same glazing element 1 has, on the same infrastructure 2, several inserts 4 and therefore several reinforced windows 5 separated from each other by intermediate lightened windows 6, lacking laminated glass it will preferably comprise a single reinforced window 5, preferably formed by a single insert 4, which may in particular occupy the front panel of the windshield.
  • the total area of the reinforced window or windows 5 may represent at least 30%, 40%, 50% or 60% of the overall area of the glazing element 1, and more particularly of the area of the wall 3, and up to 80%, 90% or even 95% of said apparent overall area of the glazing element, and more particularly the area of one or other of the main continuous faces of the wall transparent 3, which extend in a normal way to the thickness of said wall.
  • the extent of the laminated glass insert 4 can thus leave, for the remainder of the area of the glazing element 1, in the zone or zones in which the transparent wall 3 of the infrastructure extends beyond beyond the edges of said insert, one or lightened windows 6, which can occupy especially the folded sides, and in particular the fenestrons.
  • the total area of the insert 4 that is to say the extent of said insert considered according to one or other of its principal faces normal to its thickness, will preferably be strictly less than that of infrastructure 2. More particularly, as illustrated in particular in FIGS. 1 and 2, the laminated glass insert 4 will preferably be covered, for the most part, and particularly preferably in all, by the transparent wall 3 made of polymer material, against which said insert 4 is attached and whose shape it advantageously marries.
  • the piece of infrastructure 2 made of transparent polymer material forms a shell, advantageously rigid and self-supporting, which extends in one piece on a hand a main panel 1 0, intended to present at least one vertical extension component when the glazing element is installed on the vehicle, and preferentially forming a frontal panel substantially transverse to the running direction of the vehicle, and secondly one or more secondary faces 1 1, 1 2, 1 3 folded, forming one or more lateral returns 1 1, 1 2 of Fenestron type, for example triangular or trapezoidal, and / or an upper return 1 3, panoramic roof type intended to dress all or part of the roof of the vehicle, said sections secondary folded 1 1, 1 2, 1 3 being intersecting said main panel 10 to which said folded panels 1 1, 1 2, 1 3 are connected by edges 14.
  • said ridges 14 are substantially rounded.
  • the glazing element 1 may optionally have a local extra thickness at said edges 14, as shown in Figure 3, to improve its mechanical strength.
  • the main panel 10 may in turn form a front panel occupying substantially the entire width of the vehicle, and the height connecting the hood to the roof.
  • the width of said main panel 1 0 may be greater than or equal to 1 00 m and reach 1, 40 m or even 1, 60 m or more.
  • the length of the side edges 14 may be greater than or equal to 40 cm, and reach for example up to 80 cm or 90 cm or more.
  • the insert 4 laminated glass may be in the form of a plate, substantially flat or possibly slightly curved, preferably centered on the front panel 1 0, and reinforcing most or almost all of said front panel 1 0 .
  • Said frontal panel 10 will itself preferably be bordered laterally on both sides by two lateral secondary panels forming fenestrons 1 1, 1 2, each sharing an edge 14 with said front panel 10, and connected to one another by said front panel 10 thus forming a bridge supporting the insert 4.
  • the fenestrons 1 1, 1 2 each have an area strictly smaller than that of the main panel 1 0, and more particularly that of the insert 4, and preferably substantially between 0.03 m 2 and 0.5 m 2 .
  • the reference angle between the main panel 1 0 and each of the side panels 1 1, 1 2, and / or greater 1 3 may correspond for example to a deviation ⁇ of the order of 45 degrees to 90 degrees .
  • the reinforced window 5 preferably extends over the main panel 10 set back from the ridges 14 towards the center of said main panel, while the secondary panel or panels 1 1, 1 2, 1 3 form one or lightened windows 6.
  • the lateral cutting edges (edges) of the insert 4 may advantageously be set back from the edges 14, so that said insert may have a limited extent and a simple shape, of the substantially flat plate type, while the strongly curved portions of the edges which mark, within the infrastructure 2, the angle gear (or the fold) between adjacent sections 1 0, 1 1, 1 2, 1 3, will be made in the polymer material of the infrastructure 2, easier to shape than glass, as shown in Figures 1 and 3.
  • the laminated glass insert 4 may have bent extremal portions partially covering the edges 14 and initiating the angular transition between the pan. main 1 0 and the side panel 1 1, 1 2 and / or greater 1 3 corresponding.
  • the invention advantageously makes it possible to substitute for the metal uprights or other opaque frame elements, which were used up to now, real integrated angles of transparent material, made either exclusively in the polymeric material of the infrastructure 2, where appropriate of reinforced thickness, or by overlapping said polymer material and a portion of the glass insert 4.
  • the continuity of the transparency of the glazing element 1 can thus be ensured without loss of strength.
  • the glazing element 1, and more particularly the shell forming the infrastructure 2 will preferably have a substantially symmetrical arrangement with respect to the sagittal plane P s of the vehicle.
  • the transparent materials used will preferably be selected so as to have good stability over time, both with respect to their transparency, and in particular their resistance to yellowing or to any other uncontrolled variation in hue, than their mechanical properties, and especially their resilience.
  • the polymer itself is preferably chosen to intrinsically have excellent impact resistance, so that even lightweight windows 6 have a satisfactory robustness given their location and their use.
  • the piece of infrastructure 2 may be made of polycarbonate, such a material combining transparency, lightness and excellent mechanical properties.
  • the insert 4 has at least one sheet of glass 1 5.
  • Said glass sheet 1 5 here preferably forms the outer apparent surface 5E of the reinforced window 5 of the glazing element 1, which surface is intended to be oriented opposite the passenger compartment of said vehicle.
  • the hardness of the mineral glass which is greater than that of the polymer material, makes it possible in particular for the apparent surface of the glazing element 1, and more particularly of the reinforced window 5, to withstand the abrasive action of chippings, wipers or washing rollers, and therefore makes the reinforced window 5 less sensitive to scratches.
  • the thickness of glass in the insert 4 is less than or equal to 2 mm, preferably less than or equal to 1.5 mm, and particularly preferably substantially equal to 1 mm.
  • the arrangement proposed by the invention makes it possible to significantly refine the (or possibly the) glass layers used. in the insert 4, because that (s) is (are) advantageously supported (s) by the infrastructure 2. It can thus minimize the overall size and weight of the glazing element 1.
  • the thickness E1 of the glass sheet 1 5, which alone can correspond to the above-mentioned values, will preferably be constant over the entire surface of the insert 4.
  • the transparent wall 3 of polymeric material may have a thickness E3 substantially between 1 mm and 20 mm.
  • said thickness E3 will be less in the reinforced window 5 (under the glass) than in the lightened windows 6, and preferably substantially constant in said reinforced window 5.
  • the insert 4 may optionally be formed of a laminated glass panel intrinsically comprising two or more glass layers, said insert 4 preferably comprises a single sheet of glass 1 5, made of one piece.
  • the invention makes it possible to produce a simple assembly modular structure, whose spare parts, in particular the glass sheet 1 5, are easy to manufacture, and whose arrangement limits the quantity of glass needed to obtain the mechanical properties of the reinforced window 5.
  • the insert 4 is preferably held at the transparent wall 3 of the Infrastructure part 2 by an adhesion layer 1 6, preferably made of thermoplastic polyurethane.
  • the thickness of said adhesion layer 1 6 is moreover preferably substantially constant, and preferably substantially equal to 1 mm.
  • the insert 4 and more particularly its glass sheet
  • thermoplastic polyurethane materials than thermoplastic polyurethane, and for example transparent resins.
  • resins will preferably be reserved for spot or bead bonding at the edge of the visual field, whereas polyurethane will make it possible to form a transparent and continuous adhesion layer 16 without hindering visibility, and in particular without causing local variation in hue, transparency or distortion of the image perceived through the glazing element 1.
  • a rubber strip 20 having, for example, a mushroom-shaped transverse section whose foot penetrates the gap and the cap partially supported on the apparent surface 5E of the reinforced window 5, and partly on the adjacent one of the lightened window 6.
  • the insert 4 in order to favor the continuity of the transparency of the glazing element 1, and / or to give the junction a smooth appearance, the insert 4 being mounted flush, without projecting element, in the extension of the lightened window 6 neighbor, it can advantageously fill said gap by a branch of the adhesion layer 1 6, preferably polyurethane, as shown in Figure 4.
  • the insert 4 preferably comprises a single lamination interlayer 21, advantageously intended to prevent bursting, in the event of impact, of the glass sheet or sheets 1 5 constituting said insert 4.
  • said lamination interlayer 21 is disposed between a glass sheet 1 5 of said insert 4 and the transparent wall 3 of the piece of infrastructure 2, so that said interlayer also forms the adhesion layer 1 6 ensuring the fixing said insert 4 to the wall 3 of polymer material of said infrastructure part 2, as shown in particular in FIGS. 2 to 5.
  • said spacer 21 may be formed by a single sheet of thermoplastic polyurethane. The edge of said sheet may optionally be folded square (L) so as to fill the gap between the edge 17 of the glass sheet 15 of the insert 4 and the shoulder flange 18.
  • the invention thus makes it possible to provide two functions, of lamination and fixing, by means of a single layer, and thus of producing a mixed structure of the "sandwich" type tri-layers minimalist, both light and resistant, particularly simple, compact and economical in materials.
  • the glazing element 1 may comprise, in the reinforced window 5, exactly three layers, including a single carrier layer 2 transparent polymer carrier, of the polycarbonate kind, formed by the wall 3 and preferably oriented towards the interior, a single layer of lamination-adhesion 16, 21, the kind of polyurethane sheet, and finally a single layer of glass, the kind of glass sheet 15, preferably facing the outside of the vehicle, said layers being directly stacked some against others in that order.
  • the transparent wall 3 of polymer material will preferably have, at the level of the reinforced window 5, a recess dug in its thickness so as to form a housing 22 shouldered which holds the laminated glass insert by one or more edges 17 of this last.
  • said housing may thus form, preferably in transverse section to the edges 14, a transparent U-shaped frame, in which is embedded the insert 4, to which shoulder flanges 18 provide a carrier lip allowing a kind of grip. rabbet of said insert.
  • the housing 22, and more particularly the shoulder flange (s) 18, may run facing at least two sides, or even three sides of the insert 4, and more particularly of the glass sheet 15.
  • the housing 22 may border and block the two extreme lateral edges (left and right) of the insert 4, as shown in Figure 1, or the lower edge and one or two side edge.
  • the bottom 22A of said housing 22 advantageously forms the transparent wall portion 3 of the reinforced window 5, preferably thinned, covered by the insert 4, and preferably the bridge, slightly convex towards the outside, connecting the fenestrons 1 1 , 12 to each other.
  • the hidden main face of the insert 4, and more particularly the concealed main face 151 of the glass sheet 15, opposite the apparent surface 5E, which preferably has a shape substantially conjugate to that of said bottom 22A, can advantageously come substantially in plane bearing against said bottom 22A, in contact with the latter preferably over their entire common area.
  • the invention advantageously allows the introduction of an insert 4, and more particularly a glass sheet 15, particularly well maintained, in the form of inclusion, parallel to the apparent surface of the element glazing, in the thickness of the piece of infrastructure 2 in polymer, itself larger than said insert 4.
  • the glazing element 1 may comprise, preferably on either side of the front panel 10, along the edges 14, one or more projecting flanges 23 forming gutters designed to channel and evacuate, preferably towards the pavilion, the water, and especially the rain, flowing on said glazing element 1, and more particularly on the reinforced window 5, as illustrated in FIGS. 1 and 3.
  • the pipe flange 23 may advantageously be integral with the structural part 2, and in particular form a bead extending the shoulder flange 18 so as to exceed, in extra thickness, the apparent surface 5E of the reinforced window 5.
  • the external apparent face of the insert 4, and more particularly of the glass sheet 15, can be arranged flushly in the extension of the outer face of the lightened window. 6 which is immediately adjacent to it, so as to form, as shown in Figure 4, a smooth junction, preferably of continuous curvature, continuously transparent, and optionally polished for a better finish.
  • the invention also relates as such to a method of manufacturing a glazing element 1 for a vehicle.
  • Said method comprises a step (a) of producing a piece of infrastructure 2 during which is shaped, for example by injection molding or by thermoforming, a transparent polymeric material, preferably polycarbonate, to create a transparent wall 3 of predetermined shape, then a step (b) of differentiation during which is fixed on said piece of infrastructure 2, preferably with a layer of adhesion and lamination 16, 20 polyurethane thermoplastic, a laminated glass insert 4 covering an area of said piece of infrastructure strictly less than the total area of said piece of infrastructure, and preferably itself having an overall area strictly less than that of said room 2, so as to create, within the glazing element 1, at least a first reinforced window 5 corresponding to the transparent wall portion 3 covered by the insert 4 and at least a second lightened window 6 corresponding to the transparent wall portion 3 devoid of laminated glass.
  • a glass sheet 15 and its lamination interlayer 21 by inclusion in the thickness of a rigid monolithic polymer shell constituting the infrastructure part 2, and more particularly in a housing 22 dug in the thickness.
  • a housing 22 dug in the thickness one of the secant glazing panels 10, 1 1, 12, 13 among the plurality of glazed panels that includes said shell.
  • Fixing the insert 4 against the transparent wall 3 may, for example, be carried out by hot pressing said insert 4 against said wall 3, so as to cause adhesion of a laminating interlayer 21 with the glass sheet 15 as well. with the polymer wall 3.
  • the insert 4 may be preconstituted by a sheet of glass 15 previously laminated by its insert 21, the assembly then being attached and heat-fixed on the transparent wall 3.
  • the invention has a great versatility, which maximizes the extent of glazed surfaces, while allowing great freedom of design. It advantageously makes it possible to obtain a glazing element 1 having a good aesthetic and aerodynamic appearance, generally lightened, but nevertheless robust, and continuously transparent, in particular at the junctions between adjacent secant glazing panels.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

The present invention relates to a lightweight glazing element (1) for a vehicle, of the windshield type, which on the one hand comprises an infrastructure component (2) made of a transparent polymer material of the polycarbonate type, which is designed to form a transparent wall (3) and on the other hand comprises at least one insert (4) made of laminated glass which is fixed to said infrastructure component in such a way as to be superimposed with the thickness (E3) of the transparent wall (3) over part of the surface area of said transparent wall so that the glazing element (1) has at least one first reinforced window (5) corresponding to that portion of the transparent wall that is covered by the insert, preferably situated along the frontal section (10) of the windshield, and at least one lightweight second window (6) corresponding to that portion of the transparent wall (3) that is not provided with laminated glass, preferably occupying one or more wrapped-around sections (11, 12) of the side window type.

Description

PARE-BRISE HYBRIDE POUR VEHICULE COMPRENANT UNE COQUE EN POLYCARBONATE POURVUE D'UN INSERT EN VERRE FEUILLETÉ  HYBRID WINDSHIELD FOR A VEHICLE COMPRISING A POLYCARBONATE SHELL HAVING A LAMINATED GLASS INSERT
La présente invention se rapporte au domaine général des vitrages de véhicules, et notamment de véhicules automobiles, tels que pare-brise, lunettes arrière, ou fenêtres. The present invention relates to the general field of glazing of vehicles, including motor vehicles, such as windshields, rear windows, or windows.
On connaît divers agencements de vitrages pour véhicules, et notamment, par le document FR-2 957 556, des pare-brise panoramiques qui comprennent plusieurs éléments vitrés séparés, assemblés dans différentes baies délimitées par des encadrements, de sorte à former respectivement un pan frontal de type pare-brise en verre feuilleté, des rabats latéraux de type fenestrons, et un rabat supérieur de type toit panoramique.  Various glazing arrangements for vehicles are known, and in particular, by the document FR-2 957 556, panoramic windshields which comprise several separate glazed elements, assembled in different bays delimited by frames, so as to form respectively a frontal pan. laminated glass windshield type, fenestron side flaps, and a panoramic roof top flap.
Si de tels pare-brise présentent d'indéniables avantages, notamment en procurant un large champ visuel et un bon apport de lumière qui contribuent au confort visuel du conducteur et à l'agrément des passagers, ainsi qu'à la sécurité de la conduite, ils peuvent toutefois souffrir de certains inconvénients.  If such windshields have undeniable advantages, including providing a wide field of vision and a good light that contribute to the driver's comfort and enjoyment of passengers, as well as the safety of driving, they may, however, suffer from certain disadvantages.
En premier lieu, la présence des montants et encadrements nécessaires au maintien des panneaux vitrés tend, malgré l'importance de la surface vitrée, à limiter le champ visuel du conducteur.  In the first place, the presence of the amounts and frames necessary to maintain the glazed panels tends, in spite of the importance of the glass surface, to limit the driver's visual field.
En outre, la multiplication des surfaces vitrées et des encadrements associés tend à compliquer l'agencement du châssis du véhicule, à occasionner un surcroît d'opérations de fabrication et d'assemblage, et par conséquent à augmenter le temps et le coût de production dudit véhicule.  In addition, the multiplication of glass surfaces and associated frames tends to complicate the arrangement of the chassis of the vehicle, to cause an increase in manufacturing operations and assembly, and therefore to increase the time and cost of production of said vehicle.
Enfin, de tels vitrages peuvent présenter un poids particulièrement élevé, en raison de l'utilisation de panneaux en verre feuilleté, ce matériau étant en effet privilégié pour satisfaire aux normes relatives à la sécurité en cas de choc.  Finally, such glazings can have a particularly high weight, because of the use of laminated glass panels, this material is indeed preferred to meet the standards for safety in case of impact.
Les objets assignés à l'invention visent par conséquent à remédier aux inconvénients susmentionnés et à proposer un nouvel élément de vitrage pour véhicule qui soit particulièrement léger et facile à mettre en œuvre, tout en procurant un large champ visuel et en présentant une grande solidité.  The objects assigned to the invention therefore seek to overcome the aforementioned drawbacks and to propose a new vehicle glazing element which is particularly light and easy to implement, while providing a wide field of view and having a high strength.
Un autre objet assigné à l'invention vise à proposer un nouveau procédé de fabrication d'éléments de vitrage de véhicule qui soit particulièrement simple, rapide et économe à mettre en œuvre, et qui présente une bonne capacité d'adaptation à une grande variété de formes et de dimensions d'éléments de vitrage. Another object assigned to the invention is to propose a new method of manufacturing vehicle glazing elements which is particularly simple, fast and economical to implement, and which presents good ability to adapt to a wide variety of shapes and sizes of glazing elements.
Les objets assignés à l'invention sont atteints à l'aide d'un élément de vitrage pour véhicule caractérisé en ce qu'il comprend une pièce d'infrastructure qui est réalisée dans un matériau polymère transparent, lequel est agencé de sorte à former une paroi transparente, et au moins un insert en verre feuilleté qui est fixé sur ladite pièce d'infrastructure de manière à se superposer à l'épaisseur de la paroi transparente sur une partie de la superficie de ladite paroi transparente, de telle sorte que l'élément de vitrage présente au moins une première fenêtre renforcée correspondant à la portion de paroi transparente recouverte par l'insert et au moins une seconde fenêtre allégée correspondant à la portion de paroi transparente dépourvue de verre feuilleté  The objects assigned to the invention are achieved by means of a vehicle glazing element characterized in that it comprises a piece of infrastructure which is made of a transparent polymer material, which is arranged so as to form a transparent wall, and at least one laminated glass insert which is fixed on said piece of infrastructure so as to be superimposed on the thickness of the transparent wall on a part of the surface of said transparent wall, so that the glazing element has at least a first reinforced window corresponding to the portion of transparent wall covered by the insert and at least one second lightened window corresponding to the transparent wall portion without laminated glass
Les objets assignés à l'invention sont également atteints à l'aide d'un procédé de fabrication d'un élément de vitrage pour véhicule comprenant une étape (a) de réalisation d'une pièce d'infrastructure au cours de laquelle on met en forme, par exemple par moulage par injection, un matériau polymère transparent, de préférence du polycarbonate, pour créer une paroi transparente de forme prédéterminée, puis une étape (b) de différenciation par feuilletage au cours de laquelle on fixe sur ladite pièce d'infrastructure, de préférence au moyen d'une couche en polyuréthane thermoplastique, un insert en verre feuilleté couvrant une superficie de ladite pièce d'infrastructure strictement inférieure à la superficie totale de ladite pièce d'infrastructure, de sorte à créer, au sein de l'élément de vitrage, au moins une première fenêtre renforcée correspondant à la portion de paroi transparente recouverte par l'insert et au moins une seconde fenêtre allégée correspondant à la portion de paroi transparente dépourvue de verre feuilleté.  The objects assigned to the invention are also achieved by means of a method of manufacturing a vehicle glazing element comprising a step (a) of producing an infrastructure piece during which form, for example by injection molding, a transparent polymeric material, preferably polycarbonate, to create a transparent wall of predetermined shape, then a step (b) of differentiation by lamination during which is fixed on said piece of infrastructure , preferably by means of a layer of thermoplastic polyurethane, a laminated glass insert covering an area of said piece of infrastructure strictly smaller than the total area of said piece of infrastructure, so as to create, within the glazing element, at least a first reinforced window corresponding to the portion of transparent wall covered by the insert and at least one second lightened window e corresponding to the portion of transparent wall devoid of laminated glass.
Avantageusement, l'invention permet de réaliser un élément de vitrage intégralement, ou quasi-intégralement, à partir de matériaux transparents, ce qui garantit une parfaite visibilité à travers ledit élément de vitrage, en tout point de ce dernier et quel que soit l'angle selon lequel le regard se porte, depuis l'intérieur de l'habitacle du véhicule vers l'extérieur.  Advantageously, the invention makes it possible to produce a glazing element integrally, or almost completely, from transparent materials, which guarantees a perfect visibility through said glazing element, at every point of the latter and whatever the angle according to which the gaze is worn, from the inside of the passenger compartment of the vehicle to the outside.
En outre, en combinant d'une part une infrastructure transparente légère réalisée dans un matériau polymère, de préférence organique, de densité inférieure à celle du verre, avec d'autre part un insert en verre feuilleté, dont la robustesse et la résistance aux agressions extérieures, et notamment aux chocs aux rayures, est avérée, l'invention permet d'obtenir une structure mixte, ou « hybride », regroupant fenêtre(s) renforcée(s) et fenêtre(s) allégée(s), qui allège globalement l'élément de vitrage tout en conservant les qualités optiques et mécaniques globales élevées de celui-ci. In addition, by combining on the one hand a light transparent infrastructure made of a polymer material, preferably organic, of lower density than glass, on the other hand a laminated glass insert, whose robustness and resistance to attack exterior, including scratch shocks, is proven, the invention provides a structure hybrid, or "hybrid", combining strengthened window (s) and lightened window (s), which overall lighten the glazing element while maintaining the overall optical and mechanical high qualities of it.
A ce titre, les fenêtres renforcées pourront avantageusement correspondre aux zones d'homologation, les plus exposées et/ou les plus critiques en matière de qualité de visibilité ou de tenue au choc, telles que, par exemple le panneau frontal du pare-brise.  As such, the reinforced windows may advantageously correspond to the approval areas, the most exposed and / or most critical in terms of visibility quality or impact resistance, such as, for example the front panel of the windshield.
De surcroît, l'utilisation d'un polymère, avantageusement thermoplastique, plus facile à travailler que le verre minéral, autorise une mise en forme aisée, par exemple par moulage par injection ou par thermoformage, de la pièce d'infrastructure, dans des conditions relativement peu sévères, et ce quelle que soit la variété ou la complexité des formes de ladite pièce d'infrastructure.  Furthermore, the use of a polymer, advantageously thermoplastic, easier to work than the mineral glass, allows easy shaping, for example by injection molding or by thermoforming, the piece of infrastructure, under conditions relatively mild, and whatever the variety or complexity of the forms of said piece of infrastructure.
En particulier, il devient possible de couvrir d'un seul tenant, sans interruption, à l'aide d'une seule et même pièce d'infrastructure, plusieurs surfaces vitrées qui étaient jusqu'à présent réalisées dans des panneaux séparés par des montants.  In particular, it becomes possible to cover in one piece, without interruption, using a single piece of infrastructure, several glazed surfaces that were until now made in panels separated by amounts.
En outre, l'élément de vitrage ainsi obtenu forme avantageusement un sous-ensemble d'habillage complet, manipulable et insérable d'un seul tenant.  In addition, the glazing element thus obtained advantageously forms a complete assembly subassembly, manipulable and insertable in one piece.
Il en résulte une économie de temps et de moyens lors de la fabrication dudit élément de vitrage, ou de l'assemblage de celui-ci sur le véhicule, et par conséquent un gain de productivité.  This results in a saving of time and resources during the manufacture of said glazing element, or the assembly thereof on the vehicle, and therefore a productivity gain.
D'autres objets, caractéristiques et avantages de l'invention apparaîtront plus en détail à la lecture de la description qui suit, ainsi qu'à l'aide des dessins annexés, fournis à titre purement illustratif et non limitatif, parmi lesquels :  Other objects, features and advantages of the invention will appear in more detail on reading the description which follows, and with the aid of the accompanying drawings, provided for purely illustrative and non-limiting purposes, among which:
La figure 1 illustre, selon une vue en perspective de dessus, une variante de réalisation d'élément de vitrage conforme à l'invention.  Figure 1 illustrates, in a perspective view from above, an embodiment of glazing element according to the invention.
La figure 2 illustre, selon une vue en perspective éclatée, une possibilité de réalisation d'élément de vitrage conforme à l'invention.  Figure 2 illustrates, in an exploded perspective view, a possibility of producing glazing element according to the invention.
La figure 3 illustre, selon une vue en coupe transverse à l'arête de l'élément de vitrage, le détail d'une variante de jonction de l'insert en verre feuilleté sur une infrastructure en polymère, conformément à l'invention. La figure 4 illustre, selon une vue en coupe transverse à l'arête de l'élément de vitrage, le détail d'une autre variante de jonction de l'insert en verre feuilleté sur une infrastructure en polymère, conformément à l'invention. FIG. 3 illustrates, in a sectional view transverse to the edge of the glazing element, the detail of an alternative junction of the laminated glass insert on a polymer infrastructure, according to the invention. FIG. 4 illustrates, in a sectional view transverse to the edge of the glazing element, the detail of another variant of junction of the laminated glass insert on a polymer infrastructure, according to the invention.
La figure 5 illustre, selon une vue en coupe transverse à l'arête de l'élément de vitrage, le détail d'une troisième variante de jonction de l'insert en verre feuilleté sur une infrastructure en polymère, conformément à l'invention, ladite variante mettant en œuvre un joint-insert en caoutchouc.  FIG. 5 illustrates, in a sectional view transverse to the edge of the glazing element, the detail of a third variant of junction of the laminated glass insert on a polymer infrastructure, according to the invention, said variant implementing a rubber seal-insert.
La présente invention se rapport à un élément de vitrage 1 pour véhicule (non représenté).  The present invention relates to a glazing element 1 for a vehicle (not shown).
Ledit élément de vitrage est avantageusement destiné à former une cloison transparente, le cas échéant à plusieurs pans, séparant l'intérieur de l'habitacle de l'environnement du véhicule, et peut former de préférence un pare-brise, tel que cela est illustré sur la figure 1 , ou bien une lunette arrière.  Said glazing element is advantageously intended to form a transparent partition, possibly with several sides, separating the interior of the passenger from the environment of the vehicle, and may preferably form a windshield, as illustrated in Figure 1, or a rear window.
Elle concerne bien entendu en tant que tel un véhicule, et notamment un véhicule automobile, équipé d'un tel élément de vitrage 1 .  It relates of course as such a vehicle, including a motor vehicle, equipped with such a glazing element 1.
Selon l'invention, ledit élément de vitrage 1 pour véhicule comprend d'une part une pièce d'infrastructure 2 qui est réalisée dans un matériau polymère transparent, lequel est agencé de sorte à former une paroi transparente 3, et d'autre part au moins un insert 4 en verre feuilleté qui est fixé sur ladite pièce d'infrastructure 2 de manière à se superposer à l'épaisseur E3 de la paroi transparente 3 sur une partie de la superficie de ladite paroi transparente 3, de telle sorte que l'élément de vitrage 1 présente au moins une première fenêtre renforcée 5 correspondant à la portion de paroi transparente recouverte par l'insert 4, telle que schématisée par exemple en trait mixte sur la figure 1 ou la figure 4, et au moins une seconde fenêtre allégée 6 correspondant à la portion de paroi transparente 3 dépourvue de verre feuilleté, telle que schématisée par exemple en pointillés sur la figure 4.  According to the invention, said glazing element 1 for a vehicle comprises on the one hand an infrastructure piece 2 which is made of a transparent polymer material, which is arranged so as to form a transparent wall 3, and on the other hand to at least one insert 4 of laminated glass which is fixed on said piece of infrastructure 2 so as to be superimposed on the thickness E3 of the transparent wall 3 on a part of the surface of said transparent wall 3, so that the glazing element 1 has at least a first reinforced window 5 corresponding to the transparent wall portion covered by the insert 4, as schematized, for example in phantom in FIG. 1 or FIG. 4, and at least one second lightened window 6 corresponding to the transparent wall portion 3 devoid of laminated glass, as schematized for example in dashed lines in FIG. 4.
Avantageusement, l'agencement conformé à l'invention permet de réaliser au sein d'un même sous ensemble cohérent, manipulable et insérable d'un seul tenant sur une baie du véhicule, plusieurs fenêtres 4, 5 contiguës, le cas échéant de grandes dimensions, et parfaitement transparentes, ce qui optimise le champ visuel procuré par l'élément de vitrage 1 .  Advantageously, the arrangement according to the invention makes it possible to produce within a single coherent, manipulable and insertable subassembly in one piece on a vehicle bay, several adjacent windows 5, 5, where appropriate of large dimensions. , and perfectly transparent, which optimizes the visual field provided by the glazing element 1.
En outre, l'invention rend possible une différenciation des zones vitrées, en particulier selon leur exposition aux agressions extérieures, dans la mesure où il possible de sélectionner la disposition spatiale et l'étendue d'une part des fenêtres renforcées 5, qui correspondront de préférence aux zones critiques pour la sécurité ou la visibilité, telles que le panneau frontal du pare- brise, et plus particulièrement la zone d'essuyage balayée par les essuie- glaces, et d'autre part des fenêtres allégées 6, qui correspondront de préférence aux zones jugées moins critiques pour la sécurité des occupants du véhicule, telles que par exemple des pans rabattus, de type fenestrons latéraux et/ou avancée panoramique de toit, qui pourront être réalisés exclusivement en matériau polymère. In addition, the invention makes possible a differentiation of the glazed areas, in particular according to their exposure to external aggressions, insofar as it is possible to select the spatial arrangement and the extent of the reinforced windows 5, which will correspond to preference to areas critical for safety or visibility, such as the front panel of the windshield, and more particularly the wiping area swept by the wipers, and on the other hand lightened windows 6, which will preferably correspond to the areas judged less critical for the safety of the occupants of the vehicle, such as folded panels, type side windows and / or panoramic panoramic roof, which can be made exclusively of polymer material.
Avantageusement, en renforçant principalement sinon exclusivement les zones critiques de l'élément de vitrage 1 , on peut limiter significativement la quantité et la proportion de verre feuilleté utilisées, et donc alléger globalement l'élément de vitrage 1 , par exemple en réduisant son poids d'environ 30 % à 40% au moins par rapport à celui d'un élément équivalent qui serait réalisé intégralement en verre feuilleté, et ce sans pour autant sacrifier les qualités optiques et mécaniques fonctionnelles dudit élément de vitrage 1 .  Advantageously, by reinforcing mainly or even exclusively the critical areas of the glazing element 1, it is possible to significantly limit the quantity and the proportion of laminated glass used, and thus to reduce overall the glazing element 1, for example by reducing its weight by at least 30% to 40% at least in comparison with that of an equivalent element which would be made integrally of laminated glass, without sacrificing the optical and mechanical functional qualities of said glazing element 1.
Bien qu'il ne soit pas exclu qu'un même élément de vitrage 1 présente, sur une même infrastructure 2, plusieurs inserts 4 et par conséquent plusieurs fenêtres renforcées 5 séparées les unes des autres par des fenêtres allégées 6 intermédiaires, dépourvues de verre feuilleté, elle comportera de préférence une unique fenêtre renforcée 5, préférentiellement formée par un unique insert 4, qui pourra notamment occuper le pan frontal du pare-brise.  Although it is not excluded that the same glazing element 1 has, on the same infrastructure 2, several inserts 4 and therefore several reinforced windows 5 separated from each other by intermediate lightened windows 6, lacking laminated glass it will preferably comprise a single reinforced window 5, preferably formed by a single insert 4, which may in particular occupy the front panel of the windshield.
A titre indicatif, la superficie totale de la ou des fenêtres renforcées 5 pourra représenter au moins 30 %, 40 %, 50 % ou 60 % de la superficie globale de l'élément de vitrage 1 , et plus particulièrement de la superficie de la paroi transparente 3, et atteindre jusqu'à 80 %, 90 % ou même 95 % de ladite superficie globale apparente de l'élément de vitrage, et plus particulièrement de la superficie de l'une ou l'autre des faces principales continues de la paroi transparente 3, qui s'étendent de façon normale à l'épaisseur de ladite paroi.  As an indication, the total area of the reinforced window or windows 5 may represent at least 30%, 40%, 50% or 60% of the overall area of the glazing element 1, and more particularly of the area of the wall 3, and up to 80%, 90% or even 95% of said apparent overall area of the glazing element, and more particularly the area of one or other of the main continuous faces of the wall transparent 3, which extend in a normal way to the thickness of said wall.
Avantageusement, l'étendue de l'insert 4 en verre feuilleté pourra ainsi laisser subsister, pour le reste de la superficie de l'élément de vitrage 1 , dans la ou les zones dans lesquelles la paroi transparente 3 de l'infrastructure déborde au-delà des bords dudit insert, une ou des fenêtres allégées 6, qui peuvent notamment occuper les pans rabattus, et en particulier les fenestrons.  Advantageously, the extent of the laminated glass insert 4 can thus leave, for the remainder of the area of the glazing element 1, in the zone or zones in which the transparent wall 3 of the infrastructure extends beyond beyond the edges of said insert, one or lightened windows 6, which can occupy especially the folded sides, and in particular the fenestrons.
En outre, la superficie totale de l'insert 4, c'est-à-dire l'étendue dudit insert considérée selon l'une ou l'autre de ses faces principales normales à son épaisseur, sera de préférence strictement inférieure à celle de l'infrastructure 2. Plus particulièrement, tel que cela est notamment illustré sur les figures 1 et 2, l'insert 4 en verre feuilleté sera de préférence couvert préférentiellement en majorité, et de façon particulièrement préférentielle en totalité, par la paroi transparente 3 en matériau polymère, contre laquelle ledit insert 4 est accolé et dont il épouse avantageusement la forme. In addition, the total area of the insert 4, that is to say the extent of said insert considered according to one or other of its principal faces normal to its thickness, will preferably be strictly less than that of infrastructure 2. More particularly, as illustrated in particular in FIGS. 1 and 2, the laminated glass insert 4 will preferably be covered, for the most part, and particularly preferably in all, by the transparent wall 3 made of polymer material, against which said insert 4 is attached and whose shape it advantageously marries.
Tel que cela sera détaillé ci-après, en adossant ainsi l'insert 4 sur toute sa surface (normale à l'épaisseur) à la paroi transparente 3 de l'infrastructure 2, laquelle chevauche totalement ledit insert et en déborde latéralement, on assure un excellent soutien dudit insert 4, porté sur toute son étendue par l'infrastructure 2 sous-jacente, ce qui permet notamment de conférer audit insert une structure simplifiée et/ou amincie, particulièrement légère.  As will be detailed below, thus leaning the insert 4 over its entire surface (normal to the thickness) to the transparent wall 3 of the infrastructure 2, which completely overlaps said insert and protrudes laterally, it ensures excellent support of said insert 4, carried throughout its range by the underlying infrastructure 2, which allows in particular to confer on said insert a simplified structure and / or thinned, particularly lightweight.
Selon un agencement préférentiel, la pièce d'infrastructure 2 en matériau polymère transparent forme une coque, avantageusement rigide et autoporteuse, qui s'étend d'un seul tenant sur d'une part un pan principal 1 0, destiné à présenter au moins une composante d'extension verticale lorsque l'élément de vitrage est installé sur le véhicule, et formant préférentiellement un pan frontal sensiblement transverse à la direction de marche du véhicule, et d'autre part un ou plusieurs pans secondaires 1 1 , 1 2, 1 3 rabattus, formant un ou des retours latéraux 1 1 , 1 2 de type fenestrons, par exemple triangulaires ou trapézoïdaux, et/ou un retour supérieur 1 3, de type toit panoramique destiné à habiller tout ou partie du pavillon du véhicule, lesdits pans secondaires rabattus 1 1 , 1 2, 1 3 étant sécants audit pan principal 10 auquel lesdits pans rabattus 1 1 , 1 2, 1 3 sont reliés par des arêtes 14.  According to a preferred arrangement, the piece of infrastructure 2 made of transparent polymer material forms a shell, advantageously rigid and self-supporting, which extends in one piece on a hand a main panel 1 0, intended to present at least one vertical extension component when the glazing element is installed on the vehicle, and preferentially forming a frontal panel substantially transverse to the running direction of the vehicle, and secondly one or more secondary faces 1 1, 1 2, 1 3 folded, forming one or more lateral returns 1 1, 1 2 of Fenestron type, for example triangular or trapezoidal, and / or an upper return 1 3, panoramic roof type intended to dress all or part of the roof of the vehicle, said sections secondary folded 1 1, 1 2, 1 3 being intersecting said main panel 10 to which said folded panels 1 1, 1 2, 1 3 are connected by edges 14.
De préférence, lesdites arêtes 14 sont sensiblement arrondies. Preferably, said ridges 14 are substantially rounded.
En outre, l'élément de vitrage 1 pourra éventuellement présenter une surépaisseur locale au niveau desdites arêtes 14, tel que cela est illustré sur la figure 3, afin d'améliorer sa résistance mécanique. In addition, the glazing element 1 may optionally have a local extra thickness at said edges 14, as shown in Figure 3, to improve its mechanical strength.
Le pan principal 10 pourra quant à lui former un pan frontal occupant sensiblement toute la largeur du véhicule, ainsi que la hauteur reliant le capot au pavillon.  The main panel 10 may in turn form a front panel occupying substantially the entire width of the vehicle, and the height connecting the hood to the roof.
A titre indicatif, la largeur dudit pan principal 1 0 pourra être supérieure ou égale à 1 ,00 m et atteindre 1 ,40 m voire 1 ,60 m ou davantage. La longueur des arêtes 14 latérales pourra quant à elle être supérieure ou égale à 40 cm, et atteindre par exemple jusqu'à 80 cm, voire 90 cm ou davantage. L'insert 4 en verre feuilleté pourra se présenter sous la forme d'une plaque, sensiblement plane ou éventuellement légèrement bombée, de préférence centrée sur le pan frontal 1 0, et venant renforcer la majorité voire la quasi-totalité dudit pan frontal 1 0. As an indication, the width of said main panel 1 0 may be greater than or equal to 1 00 m and reach 1, 40 m or even 1, 60 m or more. The length of the side edges 14 may be greater than or equal to 40 cm, and reach for example up to 80 cm or 90 cm or more. The insert 4 laminated glass may be in the form of a plate, substantially flat or possibly slightly curved, preferably centered on the front panel 1 0, and reinforcing most or almost all of said front panel 1 0 .
Ledit pan frontal 1 0 sera lui-même préférentiellement bordé latéralement des deux côtés par deux pans secondaires latéraux formant fenestrons 1 1 , 1 2, partageant chacun une arête 14 avec ledit pan frontal 1 0, et reliés l'un à l'autre par ledit pan frontal 1 0 qui forme ainsi un pont soutenant l'insert 4.  Said frontal panel 10 will itself preferably be bordered laterally on both sides by two lateral secondary panels forming fenestrons 1 1, 1 2, each sharing an edge 14 with said front panel 10, and connected to one another by said front panel 10 thus forming a bridge supporting the insert 4.
De préférence, les fenestrons 1 1 , 1 2 présenteront chacun une superficie strictement inférieure à celle du pan principal 1 0, et plus particulièrement à celle de l'insert 4, et de préférence sensiblement comprise entre 0,03 m2 et 0,5 m2. Preferably, the fenestrons 1 1, 1 2 each have an area strictly smaller than that of the main panel 1 0, and more particularly that of the insert 4, and preferably substantially between 0.03 m 2 and 0.5 m 2 .
A titre indicatif, le renvoi d'angle entre le pan principal 1 0 et chacun des pans latéraux 1 1 , 1 2, et/ou supérieur 1 3 pourra correspondre par exemple à une déviation η de l'ordre de 45 degrés à 90 degrés.  As an indication, the reference angle between the main panel 1 0 and each of the side panels 1 1, 1 2, and / or greater 1 3 may correspond for example to a deviation η of the order of 45 degrees to 90 degrees .
Par ailleurs, tel que cela est illustré sur les figures 1 et 3, la fenêtre renforcée 5 s'étend de préférence sur le pan principal 1 0 en retrait des arêtes 14, vers le centre dudit pan principal, tandis que le ou les pans secondaires 1 1 , 1 2, 1 3 forment une ou des fenêtres allégées 6.  Moreover, as illustrated in FIGS. 1 and 3, the reinforced window 5 preferably extends over the main panel 10 set back from the ridges 14 towards the center of said main panel, while the secondary panel or panels 1 1, 1 2, 1 3 form one or lightened windows 6.
Plus particulièrement, les bords latéraux de découpe (chants) de l'insert 4 pourront avantageusement être situés en retrait des arêtes 14, de telle sorte que ledit insert peut présenter une étendue limitée et une forme simple, du genre plaque sensiblement plane, tandis que les portions fortement incurvées des arêtes qui marquent, au sein de l'infrastructure 2, le renvoi d'angle (voire le pli) entre pans 1 0, 1 1 , 1 2, 1 3 voisins, seront réalisées dans le matériau polymère de l'infrastructure 2, plus facile à mettre en forme que le verre, tel que cela est illustré sur les figures 1 et 3.  More particularly, the lateral cutting edges (edges) of the insert 4 may advantageously be set back from the edges 14, so that said insert may have a limited extent and a simple shape, of the substantially flat plate type, while the strongly curved portions of the edges which mark, within the infrastructure 2, the angle gear (or the fold) between adjacent sections 1 0, 1 1, 1 2, 1 3, will be made in the polymer material of the infrastructure 2, easier to shape than glass, as shown in Figures 1 and 3.
Toutefois, il n'est pas exclu, selon une autre variante de réalisation correspondant aux figures 4 et 5, que l'insert 4 en verre feuilleté puisse présenter des portions extrémales recourbées habillant en partie les arêtes 14 et amorçant la transition angulaire entre le pan principal 1 0 et le pan latéral 1 1 , 1 2 et/ou supérieur 1 3 correspondant.  However, it is not excluded, according to another variant embodiment corresponding to FIGS. 4 and 5, that the laminated glass insert 4 may have bent extremal portions partially covering the edges 14 and initiating the angular transition between the pan. main 1 0 and the side panel 1 1, 1 2 and / or greater 1 3 corresponding.
Quelle que soit la variante de réalisation retenue, l'invention permet avantageusement de substituer aux montants métalliques ou autres éléments d'encadrement opaques, qui étaient employés jusqu'à présent, de véritables cornières intégrées en matériau transparent, réalisées soit exclusivement dans le matériau polymère de l'infrastructure 2, le cas échéant d'épaisseur renforcée, soit par chevauchement dudit matériau polymère et d'une partie de l'insert 4 en verre. La continuité de la transparence de l'élément de vitrage 1 peut ainsi être assurée sans perte de solidité. Whatever the embodiment variant chosen, the invention advantageously makes it possible to substitute for the metal uprights or other opaque frame elements, which were used up to now, real integrated angles of transparent material, made either exclusively in the polymeric material of the infrastructure 2, where appropriate of reinforced thickness, or by overlapping said polymer material and a portion of the glass insert 4. The continuity of the transparency of the glazing element 1 can thus be ensured without loss of strength.
Par ailleurs, l'élément de vitrage 1 , et plus particulièrement la coque formant l'infrastructure 2, présentera de préférence un agencement sensiblement symétrique par rapport au plan sagittal Ps du véhicule. Furthermore, the glazing element 1, and more particularly the shell forming the infrastructure 2, will preferably have a substantially symmetrical arrangement with respect to the sagittal plane P s of the vehicle.
Bien entendu, les matériaux transparents utilisés, éventuellement teintés ou fumés, seront de préférence sélectionnés de sorte à présenter une bonne stabilité dans le temps, tant vis-à-vis de leur transparence, et en particulier de leur résistance au jaunissement ou à une quelconque autre variation incontrôlée de teinte, que de leurs propriétés mécaniques, et notamment de leur résilience.  Of course, the transparent materials used, optionally stained or smoked, will preferably be selected so as to have good stability over time, both with respect to their transparency, and in particular their resistance to yellowing or to any other uncontrolled variation in hue, than their mechanical properties, and especially their resilience.
A ce titre, le polymère lui-même est de préférence choisi pour présenter intrinsèquement une excellente résistance aux chocs, de telle sorte que même les fenêtres allégées 6 présentent une robustesse satisfaisante compte-tenu de leur situation et de leur usage.  As such, the polymer itself is preferably chosen to intrinsically have excellent impact resistance, so that even lightweight windows 6 have a satisfactory robustness given their location and their use.
En particulier, la pièce d'infrastructure 2 pourra être réalisée en polycarbonate, un tel matériau alliant transparence, légèreté et excellentes propriétés mécaniques.  In particular, the piece of infrastructure 2 may be made of polycarbonate, such a material combining transparency, lightness and excellent mechanical properties.
De préférence, l'insert 4 présente quant à lui au moins une feuille de verre 1 5.  Preferably, the insert 4 has at least one sheet of glass 1 5.
Ladite feuille de verre 1 5 forme ici préférentiellement la surface apparente extérieure 5E de la fenêtre renforcée 5 de l'élément de vitrage 1 , surface qui est destinée à être orientée à l'opposé de l'habitacle dudit véhicule.  Said glass sheet 1 5 here preferably forms the outer apparent surface 5E of the reinforced window 5 of the glazing element 1, which surface is intended to be oriented opposite the passenger compartment of said vehicle.
Avantageusement, la dureté du verre minéral, supérieure à celle du matériau polymère, permet notamment à la surface apparente de l'élément de vitrage 1 , et plus particulièrement de la fenêtre renforcée 5, de mieux résister à l'action abrasive de gravillons, des essuie-glaces ou de rouleaux de lavage, et rend par conséquent la fenêtre renforcée 5 peu sensible aux rayures.  Advantageously, the hardness of the mineral glass, which is greater than that of the polymer material, makes it possible in particular for the apparent surface of the glazing element 1, and more particularly of the reinforced window 5, to withstand the abrasive action of chippings, wipers or washing rollers, and therefore makes the reinforced window 5 less sensitive to scratches.
Préférentiellement, l'épaisseur de verre dans l'insert 4 est inférieure ou égale à 2 mm, de préférence inférieure ou égale à 1 ,5 mm, et de façon particulièrement préférentielle sensiblement égale à 1 mm.  Preferably, the thickness of glass in the insert 4 is less than or equal to 2 mm, preferably less than or equal to 1.5 mm, and particularly preferably substantially equal to 1 mm.
L'agencement proposé par l'invention permet en effet d'affiner significativement la (ou éventuellement les) couches de verre employée(s) dans l'insert 4, du fait que celle(s)-ci est (sont) avantageusement soutenue(s) par l'infrastructure 2. On peut ainsi minimiser globalement l'encombrement et le poids de l'élément de vitrage 1 . The arrangement proposed by the invention makes it possible to significantly refine the (or possibly the) glass layers used. in the insert 4, because that (s) is (are) advantageously supported (s) by the infrastructure 2. It can thus minimize the overall size and weight of the glazing element 1.
En outre, l'épaisseur E1 5 de la feuille de verre 1 5, qui pourra à elle seule correspondre aux valeurs susmentionnées, sera de préférence constante sur toute la superficie de l'insert 4.  In addition, the thickness E1 of the glass sheet 1 5, which alone can correspond to the above-mentioned values, will preferably be constant over the entire surface of the insert 4.
La paroi transparente 3 en matériau polymère pourra quant à elle présenter une épaisseur E3 sensiblement comprise entre 1 mm et 20 mm.  The transparent wall 3 of polymeric material may have a thickness E3 substantially between 1 mm and 20 mm.
De préférence ladite épaisseur E3 sera moindre dans la fenêtre renforcée 5 (sous le verre) que dans les fenêtres allégées 6, et préférentiellement sensiblement constante dans ladite fenêtre renforcée 5.  Preferably said thickness E3 will be less in the reinforced window 5 (under the glass) than in the lightened windows 6, and preferably substantially constant in said reinforced window 5.
Bien qu'il ne soit pas exclu que l'insert 4 puisse éventuellement être formé d'un panneau de verre feuilleté comportant intrinsèquement deux couches de verre ou davantage, ledit insert 4 comprend de préférence une unique feuille de verre 1 5, réalisée d'un seul tenant.  Although it is not excluded that the insert 4 may optionally be formed of a laminated glass panel intrinsically comprising two or more glass layers, said insert 4 preferably comprises a single sheet of glass 1 5, made of one piece.
L'invention permet en effet de réaliser une structure modulaire d'assemblage simple, dont les pièces détachées, notamment la feuille en verre 1 5, sont aisées à fabriquer, et dont l'agencement limite la quantité de verre nécessaire à l'obtention des propriétés mécaniques de la fenêtre renforcée 5.  The invention makes it possible to produce a simple assembly modular structure, whose spare parts, in particular the glass sheet 1 5, are easy to manufacture, and whose arrangement limits the quantity of glass needed to obtain the mechanical properties of the reinforced window 5.
Par ailleurs, l'insert 4 est de préférence est maintenu à la paroi transparente 3 de la pièce d'Infrastructure 2 par une couche d'adhésion 1 6, préférentiellement en polyuréthane thermoplastique.  Furthermore, the insert 4 is preferably held at the transparent wall 3 of the Infrastructure part 2 by an adhesion layer 1 6, preferably made of thermoplastic polyurethane.
Ladite couche d'adhésion 1 6, avantageusement transparente, interposée entre l'insert 4 et la pièce d'infrastructure 2, couvre de préférence de façon continue et homogène toute la surface de recouvrement sur laquelle l'insert 4 se superpose la paroi transparente 3.  Said adhesion layer 1 6, advantageously transparent, interposed between the insert 4 and the infrastructure part 2, preferably covers in a continuous and homogeneous manner the entire overlap surface on which the insert 4 is superimposed on the transparent wall 3 .
L'épaisseur de ladite couche d'adhésion 1 6 est par ailleurs de préférence sensiblement constante, et préférentiellement sensiblement égale à 1 mm.  The thickness of said adhesion layer 1 6 is moreover preferably substantially constant, and preferably substantially equal to 1 mm.
De préférence, l'insert 4, et plus particulièrement sa feuille de verre Preferably, the insert 4, and more particularly its glass sheet
1 5, sera fixé directement sur la pièce d'infrastructure 2 par au plus une unique couche d'adhésion 1 6 intermédiaire. 1 5, will be fixed directly to the piece of infrastructure 2 by at most a single intermediate adhesion layer 1 6.
Bien entendu, il est envisageable d'employer pour la fixation de l'insert 4 sur l'infrastructure 2 d'autres matériaux que le polyuréthane thermoplastique, et par exemple des résines transparentes. Toutefois, de telles résines seront de préférences réservées à un collage par point ou par cordon en bordure du champ visuel, alors que le polyuréthane permettra de former une couche d'adhésion 1 6 transparente et continue sans gêner la visibilité, et notamment sans occasionner de variation locale de teinte, de transparence ou de distorsion de l'image perçue à travers l'élément de vitrage 1 . Of course, it is conceivable to use for the attachment of the insert 4 on the infrastructure 2 other materials than thermoplastic polyurethane, and for example transparent resins. However, such resins will preferably be reserved for spot or bead bonding at the edge of the visual field, whereas polyurethane will make it possible to form a transparent and continuous adhesion layer 16 without hindering visibility, and in particular without causing local variation in hue, transparency or distortion of the image perceived through the glazing element 1.
Il est par ailleurs envisageable de compléter la jonction entre l'insert 4 et la pièce d'infrastructure 2 en comblant l'interstice existant entre le chant 1 7 dudit insert 4 (et plus particulièrement de sa feuille de verre 1 5) et le rebord 1 8 correspondant de ladite pièce d'infrastructure, de préférence de type rebord d'épaulement, lesdits chant 1 7 et rebord d'épaulement 1 8 étant par ailleurs préférentiellement parallèles entre eux et/ou sensiblement perpendiculaires à la surface apparente 5E de la fenêtre renforcée, et plus globalement perpendiculaires à la surface apparente de l'élément de vitrage 1 .  It is also possible to complete the junction between the insert 4 and the infrastructure part 2 by filling the gap between the edge 17 of said insert 4 (and more particularly its glass sheet 1 5) and the rim 1 8 corresponding to said piece of infrastructure, preferably of the shoulder flange type, said edge 17 and shoulder flange 18 being moreover preferably parallel to each other and / or substantially perpendicular to the apparent surface 5E of the window reinforced, and more generally perpendicular to the apparent surface of the glazing element 1.
A cet effet, on pourra éventuellement utiliser, tel que cela est illustré sur la figure 5, une bande de joint 20 en caoutchouc, présentant par exemple une section transverse en forme de champignon, dont le pied pénètre dans l'interstice et le chapeau vient en appui pour partie sur la surface apparente 5E de la fenêtre renforcée 5, et pour partie sur celle, voisine, de la fenêtre allégée 6.  For this purpose, it is possible to use, as is illustrated in FIG. 5, a rubber strip 20 having, for example, a mushroom-shaped transverse section whose foot penetrates the gap and the cap partially supported on the apparent surface 5E of the reinforced window 5, and partly on the adjacent one of the lightened window 6.
Toutefois, afin de privilégier la continuité de la transparence de l'élément de vitrage 1 , et/ou afin de conférer à la jonction un aspect lisse, l'insert 4 étant monté affleurant, sans élément saillant, dans le prolongement de la fenêtre allégée 6 voisine, on pourra avantageusement combler ledit interstice par un embranchement de la couche d'adhésion 1 6, préférentiellement en polyuréthane, tel que cela est illustré sur la figure 4.  However, in order to favor the continuity of the transparency of the glazing element 1, and / or to give the junction a smooth appearance, the insert 4 being mounted flush, without projecting element, in the extension of the lightened window 6 neighbor, it can advantageously fill said gap by a branch of the adhesion layer 1 6, preferably polyurethane, as shown in Figure 4.
Par ailleurs, l'insert 4 comprend de préférence un unique intercalaire de feuilletage 21 , avantageusement destiné à prévenir l'éclatement, en cas de choc, de la ou des feuilles de verre 1 5 constitutives dudit insert 4.  Furthermore, the insert 4 preferably comprises a single lamination interlayer 21, advantageously intended to prevent bursting, in the event of impact, of the glass sheet or sheets 1 5 constituting said insert 4.
De préférence, ledit intercalaire de feuilletage 21 est disposé entre une feuille de verre 1 5 dudit insert 4 et la paroi transparente 3 de la pièce d'infrastructure 2, de telle sorte que ledit intercalaire forme également la couche d'adhésion 1 6 assurant la fixation dudit insert 4 à la paroi 3 en matériau polymère de ladite pièce d'infrastructure 2, tel que cela est notamment illustré sur les figures 2 à 5. De façon particulièrement préférentielle, ledit intercalaire 21 pourra être formé par une seule et même feuille en polyuréthane thermoplastique. La bordure de ladite feuille pourra le cas échéant être repliée en équerre (en L) de sorte à remplir l'interstice entre le chant 17 de la feuille de verre 15 de l'insert 4 et le rebord d'épaulement 18. Preferably, said lamination interlayer 21 is disposed between a glass sheet 1 5 of said insert 4 and the transparent wall 3 of the piece of infrastructure 2, so that said interlayer also forms the adhesion layer 1 6 ensuring the fixing said insert 4 to the wall 3 of polymer material of said infrastructure part 2, as shown in particular in FIGS. 2 to 5. In a particularly preferred manner, said spacer 21 may be formed by a single sheet of thermoplastic polyurethane. The edge of said sheet may optionally be folded square (L) so as to fill the gap between the edge 17 of the glass sheet 15 of the insert 4 and the shoulder flange 18.
Avantageusement, l'invention permet ainsi d'assurer deux fonctions, de feuilletage et de fixation, au moyen d'une seule et même couche, et donc de réaliser une structure mixte de type « sandwich » tri-couches minimaliste, à la fois légère et résistante, de manière particulièrement simple, compacte et économe en matériaux.  Advantageously, the invention thus makes it possible to provide two functions, of lamination and fixing, by means of a single layer, and thus of producing a mixed structure of the "sandwich" type tri-layers minimalist, both light and resistant, particularly simple, compact and economical in materials.
Plus particulièrement, l'élément de vitrage 1 pourra comporter, dans la fenêtre renforcée 5, exactement trois couches, dont une seule couche d'infrastructure 2 porteuse en polymère transparent, du genre polycarbonate, formée par la paroi 3 et préférentiellement orientée vers l'habitacle, une seule couche de feuilletage-adhésion 16, 21 , du genre feuille de polyuréthane, et enfin une seule couche de verre, du genre feuille de verre 15, préférentiellement orientée vers l'extérieur du véhicule, lesdites couches étant directement empilées les unes contre les autres dans cet ordre.  More particularly, the glazing element 1 may comprise, in the reinforced window 5, exactly three layers, including a single carrier layer 2 transparent polymer carrier, of the polycarbonate kind, formed by the wall 3 and preferably oriented towards the interior, a single layer of lamination-adhesion 16, 21, the kind of polyurethane sheet, and finally a single layer of glass, the kind of glass sheet 15, preferably facing the outside of the vehicle, said layers being directly stacked some against others in that order.
Il n'est par ailleurs pas exclu, selon un agencement non représenté, de disposer l'insert 4 en saillie sur la paroi transparente 3.  It is also not excluded, according to an arrangement not shown, to arrange the insert 4 projecting on the transparent wall 3.
Toutefois, la paroi transparente 3 en matériau polymère présentera de préférence, au niveau de la fenêtre renforcée 5, un renfoncement creusé dans son épaisseur de sorte à former un logement 22 épaulé qui retient l'insert en verre feuilleté par un ou plusieurs chants 17 de ce dernier.  However, the transparent wall 3 of polymer material will preferably have, at the level of the reinforced window 5, a recess dug in its thickness so as to form a housing 22 shouldered which holds the laminated glass insert by one or more edges 17 of this last.
Plus particulièrement, ledit logement pourra former ainsi, de préférence en section transverse aux arêtes 14, une monture transparente en U, dans laquelle est enchâssé l'insert 4, auquel des rebords d'épaulement 18 offrent une lèvre porteuse permettant une sorte de prise en feuillure dudit insert.  More particularly, said housing may thus form, preferably in transverse section to the edges 14, a transparent U-shaped frame, in which is embedded the insert 4, to which shoulder flanges 18 provide a carrier lip allowing a kind of grip. rabbet of said insert.
Le logement 22, et plus particulièrement le ou les rebords d'épaulement 18, pourront courir en vis-à-vis d'au moins deux côtés, voire trois côtés de l'insert 4, et plus particulièrement de la feuille de verre 15. En particulier, le logement 22 pourra border et bloquer les deux bords latéraux extrémaux (gauche et droite) de l'insert 4, tel que cela est illustré sur la figure 1 , ou bien encore le bord inférieur et un ou deux bord latéral. Par ailleurs, le fond 22A dudit logement 22 forme avantageusement la portion de paroi transparente 3 de la fenêtre renforcée 5, préférentiellement amincie, couverte par l'insert 4, et préférentiellement le pont, légèrement bombé vers l'extérieur, reliant les fenestrons 1 1 , 12 l'un à l'autre. The housing 22, and more particularly the shoulder flange (s) 18, may run facing at least two sides, or even three sides of the insert 4, and more particularly of the glass sheet 15. In particular, the housing 22 may border and block the two extreme lateral edges (left and right) of the insert 4, as shown in Figure 1, or the lower edge and one or two side edge. Moreover, the bottom 22A of said housing 22 advantageously forms the transparent wall portion 3 of the reinforced window 5, preferably thinned, covered by the insert 4, and preferably the bridge, slightly convex towards the outside, connecting the fenestrons 1 1 , 12 to each other.
Ainsi, la face principale cachée de l'insert 4, et plus particulièrement la face principale cachée 151 de la feuille de verre 15, opposée à la surface apparente 5E, qui présente de préférence une forme sensiblement conjuguée à celle dudit fond 22A, peut avantageusement venir sensiblement en appui-plan contre ledit fond 22A, au contact de ce dernier de préférence sur toute leur étendue commune.  Thus, the hidden main face of the insert 4, and more particularly the concealed main face 151 of the glass sheet 15, opposite the apparent surface 5E, which preferably has a shape substantially conjugate to that of said bottom 22A, can advantageously come substantially in plane bearing against said bottom 22A, in contact with the latter preferably over their entire common area.
Grâce au logement 22, l'invention permet avantageusement la mise en place d'un insert 4, et plus particulièrement d'une feuille de verre 15, particulièrement bien maintenu, sous forme d'inclusion, parallèlement à la surface apparente de l'élément de vitrage, dans l'épaisseur de la pièce d'infrastructure 2 en polymère, elle-même de plus grandes dimensions que ledit insert 4.  Thanks to the housing 22, the invention advantageously allows the introduction of an insert 4, and more particularly a glass sheet 15, particularly well maintained, in the form of inclusion, parallel to the apparent surface of the element glazing, in the thickness of the piece of infrastructure 2 in polymer, itself larger than said insert 4.
Par ailleurs, l'élément de vitrage 1 pourra comporter, de préférence de part et d'autre du pan frontal 10, le long des arêtes 14, un ou des rebords de canalisation 23 saillants formant des gouttières conçues pour canaliser et évacuer, de préférence vers le pavillon, l'eau, et notamment la pluie, circulant sur ledit élément de vitrage 1 , et plus particulièrement sur la fenêtre renforcée 5, tel que cela est illustré sur les figures 1 et 3.  Furthermore, the glazing element 1 may comprise, preferably on either side of the front panel 10, along the edges 14, one or more projecting flanges 23 forming gutters designed to channel and evacuate, preferably towards the pavilion, the water, and especially the rain, flowing on said glazing element 1, and more particularly on the reinforced window 5, as illustrated in FIGS. 1 and 3.
Le rebord de canalisation 23 pourra avantageusement être venu de matière avec la pièce d'infrastructure 2, et notamment former un bourrelet prolongeant le rebord d'épaulement 18 de sorte à dépasser, en surépaisseur, la surface apparente 5E de la fenêtre renforcée 5.  The pipe flange 23 may advantageously be integral with the structural part 2, and in particular form a bead extending the shoulder flange 18 so as to exceed, in extra thickness, the apparent surface 5E of the reinforced window 5.
A contrario, tel qu'il a été dit plus haut, la face apparente extérieure de l'insert 4, et plus particulièrement de la feuille de verre 15, pourra être disposée de manière affleurante dans le prolongement de la face extérieure de la fenêtre allégée 6 qui lui est immédiatement voisine, de sorte à former, tel que cela est illustré sur la figure 4, une jonction lisse, de préférence de courbure continue, continûment transparente, et éventuellement polie pour une meilleure finition.  On the contrary, as has been said above, the external apparent face of the insert 4, and more particularly of the glass sheet 15, can be arranged flushly in the extension of the outer face of the lightened window. 6 which is immediately adjacent to it, so as to form, as shown in Figure 4, a smooth junction, preferably of continuous curvature, continuously transparent, and optionally polished for a better finish.
Bien entendu, l'homme du métier sera à même d'isoler ou de combiner entre elles tout ou partie des caractéristiques décrites ci-dessus, en particulier selon la forme, la silhouette, les propriétés optiques et mécaniques, ou bien encore les fonctions qu'il souhaite conférer à l'élément de vitrage 1 . Of course, those skilled in the art will be able to isolate or combine together all or some of the features described above, in particular according to the shape, the silhouette, the optical and mechanical properties, or even the functions that it wishes to confer on the glazing element 1.
L'invention concerne également en tant que tel un procédé de fabrication d'un élément de vitrage 1 pour véhicule.  The invention also relates as such to a method of manufacturing a glazing element 1 for a vehicle.
Ledit procédé comprend une étape (a) de réalisation d'une pièce d'infrastructure 2 au cours de laquelle on met en forme, par exemple par moulage par injection ou par thermoformage, un matériau polymère transparent, de préférence du polycarbonate, pour créer une paroi transparente 3 de forme prédéterminée, puis une étape (b) de différenciation au cours de laquelle on fixe sur ladite pièce d'infrastructure 2, de préférence à l'aide d'une couche d'adhésion et de feuilletage 16, 20 en polyuréthane thermoplastique, un insert 4 en verre feuilleté couvrant une superficie de ladite pièce d'infrastructure strictement inférieure à la superficie totale de ladite pièce d'infrastructure, et de préférence présentant lui-même une superficie hors-tout strictement inférieure à celle de ladite pièce d'infrastructure 2, de sorte à créer, au sein de l'élément de vitrage 1 , au moins une première fenêtre renforcée 5 correspondant à la portion de paroi transparente 3 recouverte par l'insert 4 et au moins une seconde fenêtre allégée 6 correspondant à la portion de paroi transparente 3 dépourvue de verre feuilleté.  Said method comprises a step (a) of producing a piece of infrastructure 2 during which is shaped, for example by injection molding or by thermoforming, a transparent polymeric material, preferably polycarbonate, to create a transparent wall 3 of predetermined shape, then a step (b) of differentiation during which is fixed on said piece of infrastructure 2, preferably with a layer of adhesion and lamination 16, 20 polyurethane thermoplastic, a laminated glass insert 4 covering an area of said piece of infrastructure strictly less than the total area of said piece of infrastructure, and preferably itself having an overall area strictly less than that of said room 2, so as to create, within the glazing element 1, at least a first reinforced window 5 corresponding to the transparent wall portion 3 covered by the insert 4 and at least a second lightened window 6 corresponding to the transparent wall portion 3 devoid of laminated glass.
En particulier, on pourra ainsi enchâsser une feuille de verre 15 et son intercalaire de feuilletage 21 par inclusion dans l'épaisseur d'une coque monolithique rigide en polymère constituant la pièce infrastructure 2, et plus particulièrement dans un logement 22 creusé dans l'épaisseur de l'un des pans vitrés sécants 10, 1 1 , 12, 13 parmi la pluralité de pans vitrés que comprend ladite coque.  In particular, it will thus be possible to embed a glass sheet 15 and its lamination interlayer 21 by inclusion in the thickness of a rigid monolithic polymer shell constituting the infrastructure part 2, and more particularly in a housing 22 dug in the thickness. one of the secant glazing panels 10, 1 1, 12, 13 among the plurality of glazed panels that includes said shell.
La fixation de l'insert 4 contre la paroi transparente 3 pourra par exemple intervenir par pressage à chaud dudit insert 4 contre ladite paroi 3, de sorte à provoquer l'adhésion d'un intercalaire de feuilletage 21 tant avec la feuille de verre 15 qu'avec la paroi 3 en polymère. Le cas échéant, l'insert 4 pourra être préconstitué par une feuille de verre 15 préalablement feuilletée par son intercalaire 21 , l'ensemble étant ensuite rapporté et fixé à chaud sur la paroi transparente 3.  Fixing the insert 4 against the transparent wall 3 may, for example, be carried out by hot pressing said insert 4 against said wall 3, so as to cause adhesion of a laminating interlayer 21 with the glass sheet 15 as well. with the polymer wall 3. If necessary, the insert 4 may be preconstituted by a sheet of glass 15 previously laminated by its insert 21, the assembly then being attached and heat-fixed on the transparent wall 3.
En définitive, grâce à sa conception modulaire, l'invention présente une grande polyvalence, qui permet de maximiser l'étendue des surfaces vitrées, tout en autorisant une grande liberté de design. Elle permet avantageusement d'obtenir un élément de vitrage 1 présentant un bon aspect esthétique et aérodynamique, globalement allégé, mais toutefois robuste, et continûment transparent, notamment aux jonctions entre pans vitrés sécants adjacents. Ultimately, thanks to its modular design, the invention has a great versatility, which maximizes the extent of glazed surfaces, while allowing great freedom of design. It advantageously makes it possible to obtain a glazing element 1 having a good aesthetic and aerodynamic appearance, generally lightened, but nevertheless robust, and continuously transparent, in particular at the junctions between adjacent secant glazing panels.

Claims

REVENDICATIONS
1 . Elément de vitrage (1 ) pour véhicule caractérisé en ce qu'il comprend une pièce d'infrastructure (2) qui est réalisée dans un matériau polymère transparent, lequel est agencé de sorte à former une paroi transparente (3), et au moins un insert (4) en verre feuilleté qui est fixé sur ladite pièce d'infrastructure de manière à se superposer à l'épaisseur (E3) de la paroi transparente (3) sur une partie de la superficie de ladite paroi transparente, de telle sorte que l'élément de vitrage (1 ) présente au moins une première fenêtre renforcée (5) correspondant à la portion de paroi transparente recouverte par l'insert et au moins une seconde fenêtre allégée (6) correspondant à la portion de paroi transparente (3) dépourvue de verre feuilleté. 1. A glazing element (1) for a vehicle characterized in that it comprises an infrastructure piece (2) which is made of a transparent polymeric material, which is arranged to form a transparent wall (3), and at least one insert (4) of laminated glass which is fixed on said piece of infrastructure so as to be superimposed on the thickness (E3) of the transparent wall (3) on a part of the surface of said transparent wall, so that the glazing element (1) has at least a first reinforced window (5) corresponding to the transparent wall portion covered by the insert and at least one second lightened window (6) corresponding to the transparent wall portion (3) devoid of laminated glass.
2. Elément de vitrage selon la revendication 1 caractérisé en ce que la pièce d'infrastructure (2) est réalisée en polycarbonate.  2. Glazing element according to claim 1 characterized in that the piece of infrastructure (2) is made of polycarbonate.
3. Elément de vitrage selon la revendication 1 ou 2 caractérisé en ce que l'épaisseur de verre dans l'insert (4) est inférieure ou égale à 2 mm, de préférence inférieure ou égale à 1 ,5 mm, et de façon particulièrement préférentielle sensiblement égale à 1 mm.  3. Glazing element according to claim 1 or 2 characterized in that the thickness of glass in the insert (4) is less than or equal to 2 mm, preferably less than or equal to 1.5 mm, and particularly preferential substantially equal to 1 mm.
4. Elément de vitrage selon l'une des revendications 1 à 3 caractérisé en ce que l'insert (4) comprend une unique feuille de verre (15), réalisée d'un seul tenant.  4. glazing element according to one of claims 1 to 3 characterized in that the insert (4) comprises a single glass sheet (15), made in one piece.
5. Elément de vitrage selon l'une des revendications précédentes caractérisé en ce que l'insert (4) comprend un unique intercalaire de feuilletage (21 ), disposé entre une feuille de verre (15) dudit insert et la paroi transparente (3) de la pièce d'infrastructure (2), de telle sorte que ledit intercalaire (21 ) forme également la couche d'adhésion (16) assurant la fixation dudit insert (4) à la paroi (3) en matériau polymère de ladite pièce d'infrastructure.  5. glazing element according to one of the preceding claims characterized in that the insert (4) comprises a single lamination interlayer (21) disposed between a glass sheet (15) of said insert and the transparent wall (3). of the infrastructure piece (2), so that said spacer (21) also forms the adhesion layer (16) ensuring the attachment of said insert (4) to the wall (3) of polymer material of said piece of 'infrastructure.
6. Elément de vitrage selon l'une des revendications précédentes caractérisé en ce que l'insert (4) est maintenu à la paroi transparente (3) de la pièce d'Infrastructure (2) par une couche d'adhésion (16) en polyuréthane thermoplastique.  Glazing element according to one of the preceding claims, characterized in that the insert (4) is held at the transparent wall (3) of the Infrastructure part (2) by an adhesion layer (16) in thermoplastic polyurethane.
7. Elément de vitrage selon l'une des revendications précédentes caractérisé en ce que l'insert (4) présente au moins une feuille de verre (15) qui forme la surface apparente extérieure (5E) de la fenêtre renforcée (5) de l'élément de vitrage (1 ), surface (5E) qui est destinée à être orientée à l'opposé de l'habitacle dudit véhicule. 7. glazing element according to one of the preceding claims characterized in that the insert (4) has at least one glass sheet (15) which forms the outer surface surface (5E) of the reinforced window (5) of the glazing element (1), surface (5E) which is intended to be oriented opposite the passenger compartment of said vehicle.
8. Elément de vitrage selon l'une des revendications précédentes caractérisé en ce que la paroi transparente (3) en matériau polymère présente, au niveau de la fenêtre renforcée (5), un renfoncement creusé dans son épaisseur de sorte à former un logement (22) épaulé qui retient l'insert en verre feuilleté (4) par un ou plusieurs chants (17) de ce dernier.  8. glazing element according to one of the preceding claims characterized in that the transparent wall (3) of polymeric material has, at the level of the reinforced window (5), a recess dug in its thickness so as to form a housing ( 22) which holds the laminated glass insert (4) by one or more edges (17) thereof.
9. Elément de vitrage selon l'une des revendications précédentes, caractérisé en ce que ledit élément de vitrage (1 ) comporte, de préférence de part et d'autre du pan frontal (10), un ou des rebords de canalisation (23) saillants formant des gouttières conçues pour canaliser et évacuer, de préférence vers le pavillon, l'eau, et notamment la pluie, circulant sur ledit élément de vitrage (1 ).  9. Glazing element according to one of the preceding claims, characterized in that said glazing element (1) comprises, preferably on either side of the front panel (10), one or pipe edges (23). projections forming gutters designed to channel and evacuate, preferably to the pavilion, the water, including rain, flowing on said glazing element (1).
10. Elément de vitrage selon la revendication 9, caractérisé en ce que le rebord de canalisation (23) est venu de matière avec la pièce d'infrastructure (2), et notamment forme un bourrelet prolongeant le rebord d'épaulement (18) de sorte à dépasser, en surépaisseur, la surface apparente (5E) de la fenêtre renforcée (5).  10. Glazing element according to claim 9, characterized in that the channel flange (23) is integral with the piece of infrastructure (2), and in particular forms a bead extending the shoulder flange (18) of so as to exceed, in excess thickness, the apparent surface (5E) of the reinforced window (5).
1 1 . Elément de vitrage selon l'une des revendications précédentes caractérisé en ce que la pièce d'infrastructure (2) en matériau polymère transparent forme une coque qui s'étend d'un seul tenant sur d'une part un pan principal (10), destiné à présenter au moins une composante d'extension verticale lorsque l'élément de vitrage est installé sur le véhicule, et d'autre part un ou plusieurs pan secondaires rabattus (1 1 , 12, 13), formant un ou des retours latéraux (1 1 , 12) et/ou supérieur (13), qui sont sécants audit pan principal et reliés à ce dernier par des arêtes (14), de préférence sensiblement arrondies, et en ce que la fenêtre renforcée (5) s'étend sur ledit pan principal (10), de préférence en retrait des arêtes (14), tandis que le ou les pans secondaires (1 1 , 12, 13) forment une ou des fenêtres allégées (6).  1 1. Glazing element according to one of the preceding claims characterized in that the piece of infrastructure (2) made of transparent polymer material forms a shell which extends in one piece on one hand a main panel (10), intended to have at least one vertical extension component when the glazing element is installed on the vehicle, and on the other hand one or more side panels folded (1 1, 12, 13), forming one or more lateral returns ( 1 1, 12) and / or upper (13), which are intersecting said main panel and connected thereto by edges (14), preferably substantially rounded, and in that the reinforced window (5) extends over said main panel (10), preferably recessed edges (14), while the or the secondary panels (1 1, 12, 13) form one or lightened windows (6).
12. Véhicule équipé d'un élément de vitrage (1 ) selon l'une des revendications précédente, qui forme de préférence un pare-brise ou une lunette arrière.  12. Vehicle equipped with a glazing element (1) according to one of the preceding claims, which preferably forms a windshield or a rear window.
13. Procédé de fabrication d'un élément de vitrage (1 ) pour véhicule comprenant une étape (a) de réalisation d'une pièce d'infrastructure (2) au cours de laquelle on met en forme, tel que par moulage par injection, un matériau polymère transparent, de préférence du polycarbonate, pour créer une paroi transparente (3) de forme prédéterminée, puis une étape (b) de différenciation au cours de laquelle on fixe sur ladite pièce d'infrastructure (2), de préférence à l'aide d'une couche d'adhésion et de feuilletage (16, 21 ) en polyuréthane thermoplastique, un insert (4) en verre feuilleté couvrant une superficie de ladite pièce d'infrastructure strictement inférieure à la superficie totale de ladite pièce d'infrastructure, de sorte à créer, au sein de l'élément de vitrage, au moins une première fenêtre renforcée (5) correspondant à la portion de paroi transparente recouverte par l'insert et au moins une seconde fenêtre allégée (6) correspondant à la portion de paroi transparente (3) dépourvue de verre feuilleté. 13. A method of manufacturing a glazing element (1) for a vehicle comprising a step (a) of producing a piece of infrastructure (2) in which is shaped, such as by injection molding, a transparent polymeric material, preferably polycarbonate, to create a transparent wall (3) of predetermined shape, then a step (b) of differentiation during which is fixed on said piece of infrastructure (2), preferably using a layer of adhesion and lamination (16, 21) thermoplastic polyurethane, a laminated glass insert (4) covering an area of said piece of infrastructure strictly less than the total area of said piece of infrastructure, so as to create within the element for glazing, at least a first reinforced window (5) corresponding to the transparent wall portion covered by the insert and at least one second lightened window (6) corresponding to the transparent wall portion (3) devoid of laminated glass.
PCT/FR2013/051081 2012-05-21 2013-05-16 Hybrid windshield for vehicle comprising a polycarbonate shell provided with a laminated glass insert WO2013175104A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13729977.2A EP2852501B1 (en) 2012-05-21 2013-05-16 Hybrid windshield for vehicle comprising a polycarbonate shell provided with a laminated glass insert
CN201380026955.8A CN104540696B (en) 2012-05-21 2013-05-16 Including being provided with the vehicle mixed type windshield that laminated glass plugs the Merlon housing in portion

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1254595A FR2990647B1 (en) 2012-05-21 2012-05-21 HYBRID WINDSHIELD FOR A VEHICLE COMPRISING A POLYCARBONATE SHELL HAVING A LAMINATED GLASS INSERT.
FR1254595 2012-05-21

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WO2013175104A2 true WO2013175104A2 (en) 2013-11-28
WO2013175104A3 WO2013175104A3 (en) 2014-05-22

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CN (1) CN104540696B (en)
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FR3062649A1 (en) * 2017-02-09 2018-08-10 Peugeot Citroen Automobiles Sa METHOD FOR ASSEMBLING TRANSPARENT GLAZING PANELS OF A MOTOR VEHICLE

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FR2990647B1 (en) 2014-05-16
CN104540696A (en) 2015-04-22
CN104540696B (en) 2016-11-09
EP2852501B1 (en) 2016-11-30
EP2852501A2 (en) 2015-04-01
WO2013175104A3 (en) 2014-05-22
FR2990647A1 (en) 2013-11-22

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